<template>
  
  
    <div>
<!-- 面包屑 -->
  <el-breadcrumb separator-class="el-icon-arrow-right">
  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>权限管理</el-breadcrumb-item>
  <el-breadcrumb-item>角色列表</el-breadcrumb-item>
  </el-breadcrumb>

<!-- 卡片视图  -->

<el-card>
   <el-row>
     <el-col>
         <el-button type="primary">添加角色</el-button>
     </el-col>
   </el-row>

 <el-table :data="rolelist" border stripe>
     <!-- 展开列 -->
     <el-table-column type="expand">
     <template slot-scope="scope">
          <el-row v-for="(item1,i1) in scope.row.children" 
          :key='item1.id' 
          :class="['bdbottom',i1===0?'bdtop':'','vcenter']">
              <!-- 一行24列 -->
           
              <!-- 渲染一级权限 -->
           <el-col  :span="5">
              <el-tag
                closable
               @close="removeRightById(scope.row,item1.id)"
              >{{item1.authName}}</el-tag>
              <i class="el-icon-caret-right"></i>
           </el-col>


           <!-- 渲染二级权限 渲染三级权限 -->
              <el-col :span="18" >
               <el-row v-for="(item2,i2) in item1.children"
               :class="[i2===0?'':'bdtop','vcenter']"
                :key="item2.id">
             <el-col  :span="6" > 

              <el-tag type="success"
               closable
               @close="removeRightById(scope.row,item2.id)"
              >{{item2.authName}}</el-tag>
              <i class="el-icon-caret-right"></i>

             </el-col >

               <el-col  :span="18" >
                         <el-tag v-for="(item3) in item2.children" 
                          type="warning"
                         :key="item3.id"
                         closable
                         @close="removeRightById(scope.row,item3.id)">
                                     {{item3.authName}}
                         </el-tag>
               </el-col>

                  </el-row>
              </el-col>
          </el-row>
        

     </template>

     </el-table-column>
    <!-- 索引列 -->
 <el-table-column type="index" label="#"></el-table-column>
<el-table-column  label="角色名称" prop="roleName"></el-table-column>
<el-table-column  label="角色描述" prop="roleDesc"></el-table-column>
<el-table-column  label="操作" width="300px" >
  <template slot-scope="scope">

   <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
   <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
   <el-button type="warning" icon="el-icon-setting"
   @click="showSetRightDialog(scope.row)"
    size="mini">分配权限</el-button>

     </template>
   </el-table-column>
 </el-table>
</el-card>
     <!-- 分配权限的对话框 -->
<el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%"
  @close="setRightDialogClosed"
>
<!-- 树型空间 -->
<el-tree :data="rightlist" :props="treeProps" 
show-checkbox
node-key="id"
default-expand-all
ref="treeRef"
:default-checked-keys="defKeys"
></el-tree>
 
  <span slot="footer" >
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>


</div>
</template>

<script>

export default {
   data(){
       return{
        //所有角色列表数据
        rolelist:[],
        // 控制分配权限对话框的权限
        setRightDialogVisible:false,
        // 所有权限的数据
        rightlist:[],
        // 树形控件的绑定对象
        treeProps:{
            label:'authName',
            children:'children'
        },
        // 默认选中id的结点
        defKeys:[],
          //  当前即将分配权限的角色id
          roleId:'',

        
       }
   },
   created(){
       this.getRoleList()
   },
   methods:{
  async  getRoleList(){
    const {data:res} =   await   this.$http.get('roles')
  if(res.meta.status!==200)
     {
      return this.$message.error("获取角色列表失败");
     }

     this.rolelist = res.data
     
    },
    //    根据id删除对应的权限
 async removeRightById(role,rightid){
        // 弹框提示用户
  const confirmRes =  await   this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
     if(confirmRes!='confirm')
     {
         return this.$message.info("取消了删除")

     }
  const {data:res} =await    this.$http.delete(`roles/${role.id}/rights/${rightid}`)
       
       console.log(res);
       if(res.meta.status!==200)
        {
            return this.$message.error("删除权限失败")
        }
    //   this.getRoleList()  这样重新渲染全部数据会使展开的弹窗关闭
    
    role.children = res.data
     
    return this.$message.success("确认了了删除")
      

  },
//   展示是分配权限的对话框
 async showSetRightDialog(role){
    //   获取所有权限的数据
    this.roleId = role.id
    
 const {data:res} =await  this.$http.get('rights/tree')

    if(res.meta.status!==200)
    {
        return this.$message.error('获取权限失败!!')
    }
        //  把获取的权限数据保存
     this.rightlist = res.data


// 递归获取三级结点的id
          this.getLeafkeys(role,this.defKeys)

          this.setRightDialogVisible=true

  },
//    通过递归函数获取角色所有的三级权限的id 并保存到  defKey中
  getLeafkeys(node,arr){
        //   如果当前博得结点不包含children属性 则是三级结点
         if(!node.children){

     return arr.push(node.id)
         }
         node.children.forEach(item => {
             this.getLeafkeys(item,arr)
         });

  },
//   监听分配权限的bug 关闭事件
  setRightDialogClosed()
  {
    //   不然点击其他的会导致累计
        this.defKeys=[]
  },

//    点击为选手分配权限
  async    allotRights(){
     const keys = [
      //  。。。展开运算法
         ...this.$refs.treeRef.getCheckedKeys(),
         ...this.$refs.treeRef.getHalfCheckedKeys()

     ]
    //  console.log(keys);
    // 把数组变成以,隔开的字符串
     const idStr = keys.join(',')
    //  console.log(idStr);
  const {data:res} = await  this.$http.post(`roles/${this.roleId}/rights`,
  {rids:idStr})
            if(res.meta.status!==200)
            {
              console.log(res);
              return this.$message.error("分配权限失败")
            }
        this.$message.success("分配权限成功")
         this.getRoleList()
        // this.rightlist = res.data
         this.setRightDialogVisible = false
 }

   },


}
</script>
<style scoped>
    .vcenter{
        /* 纵向居中 */
        display: flex;
        align-items: center;

    }
</style>